Commit | Line | Data |
---|---|---|
76797561 | 1 | /* |
fe32782c KM |
2 | * Copyright (c) 1980, 1986 The Regents of the University of California. |
3 | * All rights reserved. | |
4 | * | |
70ab3c27 | 5 | * %sccs.include.redist.c% |
76797561 DF |
6 | */ |
7 | ||
5d9906c0 | 8 | #ifndef lint |
70ab3c27 | 9 | static char sccsid[] = "@(#)utilities.c 5.26 (Berkeley) %G%"; |
fe32782c | 10 | #endif /* not lint */ |
5d9906c0 | 11 | |
5d9906c0 | 12 | #include <sys/param.h> |
72e5286b | 13 | #include <ufs/dinode.h> |
4d7f4685 KM |
14 | #include <ufs/fs.h> |
15 | #include <ufs/dir.h> | |
392fe950 KB |
16 | #include <stdio.h> |
17 | #include <ctype.h> | |
5d9906c0 KM |
18 | #include "fsck.h" |
19 | ||
adc5a10c | 20 | long diskreads, totalreads; /* Disk cache statistics */ |
5d9906c0 | 21 | long lseek(); |
d35d4c2b | 22 | char *malloc(); |
5d9906c0 KM |
23 | |
24 | ftypeok(dp) | |
569ec282 | 25 | struct dinode *dp; |
5d9906c0 KM |
26 | { |
27 | switch (dp->di_mode & IFMT) { | |
28 | ||
29 | case IFDIR: | |
30 | case IFREG: | |
31 | case IFBLK: | |
32 | case IFCHR: | |
33 | case IFLNK: | |
34 | case IFSOCK: | |
35 | return (1); | |
36 | ||
37 | default: | |
38 | if (debug) | |
39 | printf("bad file type 0%o\n", dp->di_mode); | |
40 | return (0); | |
41 | } | |
42 | } | |
43 | ||
af36d6a8 KM |
44 | reply(question) |
45 | char *question; | |
5d9906c0 | 46 | { |
af36d6a8 KM |
47 | int persevere; |
48 | char c; | |
5d9906c0 KM |
49 | |
50 | if (preen) | |
51 | pfatal("INTERNAL ERROR: GOT TO reply()"); | |
af36d6a8 KM |
52 | persevere = !strcmp(question, "CONTINUE"); |
53 | printf("\n"); | |
54 | if (!persevere && (nflag || fswritefd < 0)) { | |
55 | printf("%s? no\n\n", question); | |
5d9906c0 KM |
56 | return (0); |
57 | } | |
af36d6a8 KM |
58 | if (yflag || (persevere && nflag)) { |
59 | printf("%s? yes\n\n", question); | |
5d9906c0 KM |
60 | return (1); |
61 | } | |
af36d6a8 KM |
62 | do { |
63 | printf("%s? [yn] ", question); | |
64 | (void) fflush(stdout); | |
65 | c = getc(stdin); | |
66 | while (c != '\n' && getc(stdin) != '\n') | |
67 | if (feof(stdin)) | |
68 | return (0); | |
69 | } while (c != 'y' && c != 'Y' && c != 'n' && c != 'N'); | |
5d9906c0 | 70 | printf("\n"); |
af36d6a8 | 71 | if (c == 'y' || c == 'Y') |
5d9906c0 | 72 | return (1); |
af36d6a8 | 73 | return (0); |
5d9906c0 KM |
74 | } |
75 | ||
adc5a10c KM |
76 | /* |
77 | * Malloc buffers and set up cache. | |
78 | */ | |
79 | bufinit() | |
80 | { | |
569ec282 | 81 | register struct bufarea *bp; |
adc5a10c KM |
82 | long bufcnt, i; |
83 | char *bufp; | |
84 | ||
c0dee198 | 85 | pbp = pdirbp = (struct bufarea *)0; |
569ec282 | 86 | bufp = malloc((unsigned int)sblock.fs_bsize); |
adc5a10c KM |
87 | if (bufp == 0) |
88 | errexit("cannot allocate buffer pool\n"); | |
89 | cgblk.b_un.b_buf = bufp; | |
90 | initbarea(&cgblk); | |
91 | bufhead.b_next = bufhead.b_prev = &bufhead; | |
92 | bufcnt = MAXBUFSPACE / sblock.fs_bsize; | |
93 | if (bufcnt < MINBUFS) | |
94 | bufcnt = MINBUFS; | |
95 | for (i = 0; i < bufcnt; i++) { | |
569ec282 KM |
96 | bp = (struct bufarea *)malloc(sizeof(struct bufarea)); |
97 | bufp = malloc((unsigned int)sblock.fs_bsize); | |
d35d4c2b | 98 | if (bp == NULL || bufp == NULL) { |
adc5a10c KM |
99 | if (i >= MINBUFS) |
100 | break; | |
101 | errexit("cannot allocate buffer pool\n"); | |
102 | } | |
103 | bp->b_un.b_buf = bufp; | |
104 | bp->b_prev = &bufhead; | |
105 | bp->b_next = bufhead.b_next; | |
106 | bufhead.b_next->b_prev = bp; | |
107 | bufhead.b_next = bp; | |
108 | initbarea(bp); | |
109 | } | |
d8f697fc | 110 | bufhead.b_size = i; /* save number of buffers */ |
adc5a10c KM |
111 | } |
112 | ||
113 | /* | |
114 | * Manage a cache of directory blocks. | |
115 | */ | |
569ec282 | 116 | struct bufarea * |
adc5a10c KM |
117 | getdatablk(blkno, size) |
118 | daddr_t blkno; | |
119 | long size; | |
120 | { | |
569ec282 | 121 | register struct bufarea *bp; |
adc5a10c KM |
122 | |
123 | for (bp = bufhead.b_next; bp != &bufhead; bp = bp->b_next) | |
d53fc3db | 124 | if (bp->b_bno == fsbtodb(&sblock, blkno)) |
adc5a10c KM |
125 | goto foundit; |
126 | for (bp = bufhead.b_prev; bp != &bufhead; bp = bp->b_prev) | |
127 | if ((bp->b_flags & B_INUSE) == 0) | |
128 | break; | |
129 | if (bp == &bufhead) | |
130 | errexit("deadlocked buffer pool\n"); | |
131 | getblk(bp, blkno, size); | |
132 | /* fall through */ | |
133 | foundit: | |
134 | totalreads++; | |
135 | bp->b_prev->b_next = bp->b_next; | |
136 | bp->b_next->b_prev = bp->b_prev; | |
137 | bp->b_prev = &bufhead; | |
138 | bp->b_next = bufhead.b_next; | |
139 | bufhead.b_next->b_prev = bp; | |
140 | bufhead.b_next = bp; | |
141 | bp->b_flags |= B_INUSE; | |
142 | return (bp); | |
143 | } | |
144 | ||
569ec282 | 145 | struct bufarea * |
5d9906c0 | 146 | getblk(bp, blk, size) |
569ec282 | 147 | register struct bufarea *bp; |
5d9906c0 KM |
148 | daddr_t blk; |
149 | long size; | |
150 | { | |
5d9906c0 KM |
151 | daddr_t dblk; |
152 | ||
d53fc3db KM |
153 | dblk = fsbtodb(&sblock, blk); |
154 | if (bp->b_bno == dblk) | |
5d9906c0 | 155 | return (bp); |
569ec282 | 156 | flush(fswritefd, bp); |
adc5a10c | 157 | diskreads++; |
569ec282 | 158 | bp->b_errs = bread(fsreadfd, bp->b_un.b_buf, dblk, size); |
d53fc3db | 159 | bp->b_bno = dblk; |
49505034 KM |
160 | bp->b_size = size; |
161 | return (bp); | |
5d9906c0 KM |
162 | } |
163 | ||
569ec282 KM |
164 | flush(fd, bp) |
165 | int fd; | |
166 | register struct bufarea *bp; | |
5d9906c0 | 167 | { |
7718c0e6 | 168 | register int i, j; |
5d9906c0 | 169 | |
7718c0e6 KM |
170 | if (!bp->b_dirty) |
171 | return; | |
49505034 | 172 | if (bp->b_errs != 0) |
919c85da MK |
173 | pfatal("WRITING %sZERO'ED BLOCK %d TO DISK\n", |
174 | (bp->b_errs == bp->b_size / dev_bsize) ? "" : "PARTIALLY ", | |
175 | bp->b_bno); | |
5d9906c0 | 176 | bp->b_dirty = 0; |
49505034 | 177 | bp->b_errs = 0; |
569ec282 | 178 | bwrite(fd, bp->b_un.b_buf, bp->b_bno, (long)bp->b_size); |
7718c0e6 KM |
179 | if (bp != &sblk) |
180 | return; | |
181 | for (i = 0, j = 0; i < sblock.fs_cssize; i += sblock.fs_bsize, j++) { | |
569ec282 | 182 | bwrite(fswritefd, (char *)sblock.fs_csp[j], |
7718c0e6 KM |
183 | fsbtodb(&sblock, sblock.fs_csaddr + j * sblock.fs_frag), |
184 | sblock.fs_cssize - i < sblock.fs_bsize ? | |
185 | sblock.fs_cssize - i : sblock.fs_bsize); | |
186 | } | |
5d9906c0 KM |
187 | } |
188 | ||
569ec282 KM |
189 | rwerror(mesg, blk) |
190 | char *mesg; | |
5d9906c0 KM |
191 | daddr_t blk; |
192 | { | |
193 | ||
194 | if (preen == 0) | |
195 | printf("\n"); | |
569ec282 | 196 | pfatal("CANNOT %s: BLK %ld", mesg, blk); |
5d9906c0 KM |
197 | if (reply("CONTINUE") == 0) |
198 | errexit("Program terminated\n"); | |
199 | } | |
200 | ||
201 | ckfini() | |
202 | { | |
569ec282 | 203 | register struct bufarea *bp, *nbp; |
d8f697fc | 204 | int cnt = 0; |
5d9906c0 | 205 | |
569ec282 | 206 | flush(fswritefd, &sblk); |
55f8bbd7 | 207 | if (havesb && sblk.b_bno != SBOFF / dev_bsize && |
6eb81197 | 208 | !preen && reply("UPDATE STANDARD SUPERBLOCK")) { |
bc5c7748 | 209 | sblk.b_bno = SBOFF / dev_bsize; |
5d9906c0 | 210 | sbdirty(); |
569ec282 | 211 | flush(fswritefd, &sblk); |
5d9906c0 | 212 | } |
569ec282 | 213 | flush(fswritefd, &cgblk); |
3249f52d KM |
214 | free(cgblk.b_un.b_buf); |
215 | for (bp = bufhead.b_prev; bp != &bufhead; bp = nbp) { | |
d8f697fc | 216 | cnt++; |
569ec282 | 217 | flush(fswritefd, bp); |
3249f52d KM |
218 | nbp = bp->b_prev; |
219 | free(bp->b_un.b_buf); | |
220 | free((char *)bp); | |
d8f697fc KM |
221 | } |
222 | if (bufhead.b_size != cnt) | |
223 | errexit("Panic: lost %d buffers\n", bufhead.b_size - cnt); | |
c0dee198 | 224 | pbp = pdirbp = (struct bufarea *)0; |
adc5a10c | 225 | if (debug) |
d8f697fc KM |
226 | printf("cache missed %d of %d (%d%%)\n", diskreads, |
227 | totalreads, diskreads * 100 / totalreads); | |
569ec282 KM |
228 | (void)close(fsreadfd); |
229 | (void)close(fswritefd); | |
5d9906c0 KM |
230 | } |
231 | ||
569ec282 KM |
232 | bread(fd, buf, blk, size) |
233 | int fd; | |
5d9906c0 KM |
234 | char *buf; |
235 | daddr_t blk; | |
236 | long size; | |
237 | { | |
49505034 KM |
238 | char *cp; |
239 | int i, errs; | |
240 | ||
569ec282 KM |
241 | if (lseek(fd, blk * dev_bsize, 0) < 0) |
242 | rwerror("SEEK", blk); | |
243 | else if (read(fd, buf, (int)size) == size) | |
49505034 | 244 | return (0); |
569ec282 KM |
245 | rwerror("READ", blk); |
246 | if (lseek(fd, blk * dev_bsize, 0) < 0) | |
247 | rwerror("SEEK", blk); | |
49505034 | 248 | errs = 0; |
569ec282 | 249 | bzero(buf, (int)size); |
919c85da MK |
250 | printf("THE FOLLOWING DISK SECTORS COULD NOT BE READ:"); |
251 | for (cp = buf, i = 0; i < size; i += secsize, cp += secsize) { | |
569ec282 KM |
252 | if (read(fd, cp, (int)secsize) < 0) { |
253 | lseek(fd, blk * dev_bsize + i + secsize, 0); | |
55f8bbd7 | 254 | if (secsize != dev_bsize && dev_bsize != 1) |
919c85da MK |
255 | printf(" %d (%d),", |
256 | (blk * dev_bsize + i) / secsize, | |
257 | blk + i / dev_bsize); | |
258 | else | |
259 | printf(" %d,", blk + i / dev_bsize); | |
49505034 KM |
260 | errs++; |
261 | } | |
262 | } | |
cee9cbac | 263 | printf("\n"); |
49505034 | 264 | return (errs); |
5d9906c0 KM |
265 | } |
266 | ||
569ec282 KM |
267 | bwrite(fd, buf, blk, size) |
268 | int fd; | |
5d9906c0 KM |
269 | char *buf; |
270 | daddr_t blk; | |
271 | long size; | |
272 | { | |
cee9cbac KM |
273 | int i; |
274 | char *cp; | |
5d9906c0 | 275 | |
569ec282 | 276 | if (fd < 0) |
cee9cbac | 277 | return; |
569ec282 KM |
278 | if (lseek(fd, blk * dev_bsize, 0) < 0) |
279 | rwerror("SEEK", blk); | |
280 | else if (write(fd, buf, (int)size) == size) { | |
281 | fsmodified = 1; | |
cee9cbac | 282 | return; |
5d9906c0 | 283 | } |
569ec282 KM |
284 | rwerror("WRITE", blk); |
285 | if (lseek(fd, blk * dev_bsize, 0) < 0) | |
286 | rwerror("SEEK", blk); | |
919c85da | 287 | printf("THE FOLLOWING SECTORS COULD NOT BE WRITTEN:"); |
6eb81197 | 288 | for (cp = buf, i = 0; i < size; i += dev_bsize, cp += dev_bsize) |
569ec282 KM |
289 | if (write(fd, cp, (int)dev_bsize) < 0) { |
290 | lseek(fd, blk * dev_bsize + i + dev_bsize, 0); | |
6eb81197 | 291 | printf(" %d,", blk + i / dev_bsize); |
6d8dba44 | 292 | } |
cee9cbac KM |
293 | printf("\n"); |
294 | return; | |
5d9906c0 KM |
295 | } |
296 | ||
3e2a23ca KM |
297 | /* |
298 | * allocate a data block with the specified number of fragments | |
299 | */ | |
300 | allocblk(frags) | |
569ec282 | 301 | long frags; |
3e2a23ca KM |
302 | { |
303 | register int i, j, k; | |
304 | ||
305 | if (frags <= 0 || frags > sblock.fs_frag) | |
306 | return (0); | |
569ec282 | 307 | for (i = 0; i < maxfsblock - sblock.fs_frag; i += sblock.fs_frag) { |
3e2a23ca | 308 | for (j = 0; j <= sblock.fs_frag - frags; j++) { |
569ec282 | 309 | if (testbmap(i + j)) |
3e2a23ca KM |
310 | continue; |
311 | for (k = 1; k < frags; k++) | |
569ec282 | 312 | if (testbmap(i + j + k)) |
3e2a23ca KM |
313 | break; |
314 | if (k < frags) { | |
315 | j += k; | |
316 | continue; | |
317 | } | |
318 | for (k = 0; k < frags; k++) | |
319 | setbmap(i + j + k); | |
320 | n_blks += frags; | |
321 | return (i + j); | |
322 | } | |
323 | } | |
324 | return (0); | |
325 | } | |
326 | ||
327 | /* | |
328 | * Free a previously allocated block | |
329 | */ | |
330 | freeblk(blkno, frags) | |
331 | daddr_t blkno; | |
569ec282 | 332 | long frags; |
3e2a23ca KM |
333 | { |
334 | struct inodesc idesc; | |
335 | ||
336 | idesc.id_blkno = blkno; | |
337 | idesc.id_numfrags = frags; | |
338 | pass4check(&idesc); | |
339 | } | |
340 | ||
3ad2f081 KM |
341 | /* |
342 | * Find a pathname | |
343 | */ | |
344 | getpathname(namebuf, curdir, ino) | |
345 | char *namebuf; | |
346 | ino_t curdir, ino; | |
347 | { | |
348 | int len; | |
349 | register char *cp; | |
350 | struct inodesc idesc; | |
351 | extern int findname(); | |
352 | ||
c7153893 | 353 | if (statemap[curdir] != DSTATE && statemap[curdir] != DFOUND) { |
3ad2f081 KM |
354 | strcpy(namebuf, "?"); |
355 | return; | |
356 | } | |
569ec282 | 357 | bzero((char *)&idesc, sizeof(struct inodesc)); |
3ad2f081 | 358 | idesc.id_type = DATA; |
45ae1fd3 | 359 | cp = &namebuf[MAXPATHLEN - 1]; |
315f1422 | 360 | *cp = '\0'; |
3ad2f081 KM |
361 | if (curdir != ino) { |
362 | idesc.id_parent = curdir; | |
363 | goto namelookup; | |
364 | } | |
365 | while (ino != ROOTINO) { | |
366 | idesc.id_number = ino; | |
367 | idesc.id_func = findino; | |
368 | idesc.id_name = ".."; | |
c7153893 | 369 | if ((ckinode(ginode(ino), &idesc) & FOUND) == 0) |
3ad2f081 KM |
370 | break; |
371 | namelookup: | |
372 | idesc.id_number = idesc.id_parent; | |
373 | idesc.id_parent = ino; | |
374 | idesc.id_func = findname; | |
375 | idesc.id_name = namebuf; | |
c7153893 | 376 | if ((ckinode(ginode(idesc.id_number), &idesc)&FOUND) == 0) |
3ad2f081 KM |
377 | break; |
378 | len = strlen(namebuf); | |
379 | cp -= len; | |
380 | if (cp < &namebuf[MAXNAMLEN]) | |
381 | break; | |
382 | bcopy(namebuf, cp, len); | |
383 | *--cp = '/'; | |
384 | ino = idesc.id_number; | |
385 | } | |
386 | if (ino != ROOTINO) { | |
387 | strcpy(namebuf, "?"); | |
388 | return; | |
389 | } | |
45ae1fd3 | 390 | bcopy(cp, namebuf, &namebuf[MAXPATHLEN] - cp); |
3ad2f081 KM |
391 | } |
392 | ||
392fe950 | 393 | void |
5d9906c0 KM |
394 | catch() |
395 | { | |
5d9906c0 KM |
396 | ckfini(); |
397 | exit(12); | |
398 | } | |
399 | ||
3cfe4689 MK |
400 | /* |
401 | * When preening, allow a single quit to signal | |
402 | * a special exit after filesystem checks complete | |
403 | * so that reboot sequence may be interrupted. | |
404 | */ | |
392fe950 | 405 | void |
3cfe4689 MK |
406 | catchquit() |
407 | { | |
408 | extern returntosingle; | |
409 | ||
410 | printf("returning to single-user after filesystem check\n"); | |
411 | returntosingle = 1; | |
412 | (void)signal(SIGQUIT, SIG_DFL); | |
413 | } | |
414 | ||
415 | /* | |
416 | * Ignore a single quit signal; wait and flush just in case. | |
417 | * Used by child processes in preen. | |
418 | */ | |
392fe950 | 419 | void |
3cfe4689 MK |
420 | voidquit() |
421 | { | |
422 | ||
423 | sleep(1); | |
424 | (void)signal(SIGQUIT, SIG_IGN); | |
425 | (void)signal(SIGQUIT, SIG_DFL); | |
426 | } | |
427 | ||
5d9906c0 KM |
428 | /* |
429 | * determine whether an inode should be fixed. | |
430 | */ | |
7718c0e6 | 431 | dofix(idesc, msg) |
5d9906c0 | 432 | register struct inodesc *idesc; |
7718c0e6 | 433 | char *msg; |
5d9906c0 KM |
434 | { |
435 | ||
436 | switch (idesc->id_fix) { | |
437 | ||
438 | case DONTKNOW: | |
7718c0e6 | 439 | if (idesc->id_type == DATA) |
569ec282 | 440 | direrror(idesc->id_number, msg); |
7718c0e6 KM |
441 | else |
442 | pwarn(msg); | |
443 | if (preen) { | |
444 | printf(" (SALVAGED)\n"); | |
445 | idesc->id_fix = FIX; | |
446 | return (ALTERED); | |
447 | } | |
5d9906c0 KM |
448 | if (reply("SALVAGE") == 0) { |
449 | idesc->id_fix = NOFIX; | |
450 | return (0); | |
451 | } | |
452 | idesc->id_fix = FIX; | |
453 | return (ALTERED); | |
454 | ||
455 | case FIX: | |
456 | return (ALTERED); | |
457 | ||
458 | case NOFIX: | |
459 | return (0); | |
460 | ||
461 | default: | |
462 | errexit("UNKNOWN INODESC FIX MODE %d\n", idesc->id_fix); | |
463 | } | |
464 | /* NOTREACHED */ | |
465 | } | |
466 | ||
5d9906c0 KM |
467 | /* VARARGS1 */ |
468 | errexit(s1, s2, s3, s4) | |
469 | char *s1; | |
470 | { | |
7718c0e6 | 471 | printf(s1, s2, s3, s4); |
5d9906c0 KM |
472 | exit(8); |
473 | } | |
474 | ||
475 | /* | |
569ec282 KM |
476 | * An unexpected inconsistency occured. |
477 | * Die if preening, otherwise just print message and continue. | |
5d9906c0 KM |
478 | */ |
479 | /* VARARGS1 */ | |
480 | pfatal(s, a1, a2, a3) | |
481 | char *s; | |
482 | { | |
483 | ||
484 | if (preen) { | |
485 | printf("%s: ", devname); | |
486 | printf(s, a1, a2, a3); | |
487 | printf("\n"); | |
7718c0e6 KM |
488 | printf("%s: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.\n", |
489 | devname); | |
490 | exit(8); | |
5d9906c0 KM |
491 | } |
492 | printf(s, a1, a2, a3); | |
493 | } | |
494 | ||
5d9906c0 | 495 | /* |
569ec282 | 496 | * Pwarn just prints a message when not preening, |
5d9906c0 KM |
497 | * or a warning (preceded by filename) when preening. |
498 | */ | |
499 | /* VARARGS1 */ | |
500 | pwarn(s, a1, a2, a3, a4, a5, a6) | |
501 | char *s; | |
502 | { | |
503 | ||
504 | if (preen) | |
505 | printf("%s: ", devname); | |
506 | printf(s, a1, a2, a3, a4, a5, a6); | |
507 | } | |
508 | ||
509 | #ifndef lint | |
510 | /* | |
511 | * Stub for routines from kernel. | |
512 | */ | |
513 | panic(s) | |
514 | char *s; | |
515 | { | |
516 | ||
7718c0e6 KM |
517 | pfatal("INTERNAL INCONSISTENCY:"); |
518 | errexit(s); | |
5d9906c0 KM |
519 | } |
520 | #endif |